Oral and Poster Abstracts

vitamin A stores in liver, the hypovitaminosis is not provable. Increased
secretion of vitamin A in milk during postpartum period, increases the risk
of hypovitaminosis occurrence in cattle’s feed on a poor beta- carotene
nutrition. The aim of this study was to evaluate the value of vitamin A &
beta-carotene during postpartum period in some semi industrial farms
with poor beta-carotene based nutrition in Ghaemshahr Iran.
Material & methods: Blood samples were obtained from 88 dairy
cows during postpartum period. The samples were centrifuged and
froze pa at -20 °C. To prevent direct contact of samples with air and
light, serum were preserved at dark pockets. Cows were classified at 9
groups based on postpartum period (1,2,3,4,5,6,7,8,9 month after
parturition). Vitamin A & beta-carotene were determined by
spectrophotometric method.
Results: The mean value of vitamin A & beta-carotene were
38.06±9.16 µg/dl & 33.8±9.74 µg/dl respectively. The mean value of
vitamin A in 1,2,3,4,5,6,7,8,9 month postpartum were 33.98±7.26,
29.51±3.5, 35.23±1.44, 37.20±7.62, 38.74±9.06, 38.09±8.20,
39.91±6.96, 42.89±4.87, 46.05±5.01 respectively. The mean value of
beta-carotene in 1,2,3,4,5,6,7,8,9 month postpartum were 37.02±3.45,
40.17±1.56, 26.79±3.40, 40.29±6.26, 18.07±4.02, 36.15±3.6,
59.61±8.36, 36.31±7.31, 31.11±8.19 respectively.
Conclusion: The mean values of vitamin A were normal in spite of
consumption of poor beta- carotene based nutrition. It might be due to
high level of liver stores. There were not significant differences in mean
vitamin A during postpartum period. The mean beta-carotene were lower
than reference ranges during post partum period. The decreased level of
beta-carotene indicates the nutritional deficiency of beta-carotene.
Key words: Vit A, beta carotene, postpartum period
445 Comparison of Clinical and Laboratuar Responses for
Laparotomic Omentopexy and Laparoscopic Abomasopexy in
Cows with Left Abomasal Displacement
K. Yigitarslan 1 , N. Yavru 2 , S. Avki 1
1 University of Mehmet Akif Ersoy, Faculty of Vet.Med,
DEPARTMENT OF SURGERY, Burdur, Turkey
2 University of Selcuk, Faculty of Vet. Med., DEPARTMENT OF
SURGERY, Konya, Turkey
The objective of this study was to compare the metabolic responses and
recovery period in cows with left abomasal displacement following by
surgical treatment either with laparotomic omentopexy or laparoscopic
abomasopexy. Forty cows brought to the Faculty of Veterinary Science
(The Universities of Selcuk and Mehmet Akif Ersoy) and diagnosed with
left abomasal displacement were used. The cows were divided for two
groups. Twenty cows (group 1) were treated with laparotomic
omentopexy and the other 20 were treated with laparoscopic
abomasopexy. There were no statistically differences between both
groups concern about sex, age, number of calving, time after parturition,
diseases period, level of displacement, feces quantity, body temperature,
heart frequency and serum lactate levels. Serum K and Cl levels were
reached to normal levels in laparoscopic abomasopexy group at 72 nd
hours postoperatively. The serum cortizol levels were maximum at 0 th
hours both in laparoscopic abomasopexy and laparotomic omentopexy
groups, and it was decreased under the preoperative levels after 24 hours.
In cows treated with laparoscopic abomasopexy, the serum cortizol levels
were statistically decreased at 24 th and 72 nd hours compared to the
laparotomic omentopexy group (p